300 × 1050Portrait
A very tall format beside the content of desktop pages, close to the height of a full screen. It has room for a large image, a headline and supporting copy, and is sold as a premium placement.
Specs
| Size | 300 × 1050 pixels |
|---|---|
| Aspect ratio | 2:7 (0.29:1) |
| Shape | Tower |
| Runs on | Display networks and ad servers |
| Safe zone | 14 px from every edge |
| Smallest text | 12 px for text and buttons, 17 px for headlines |
| Static file | Up to 150 KB |
| Animation | HTML5 or animated GIF, up to 15 seconds |
| Spec source | support.google.com, checked Oct 16, 2026 |
Where it runs
| Package | Delivers |
|---|---|
| Google Ads · HTML5Specs checked | JPG or PNG, up to 150 KBHTML5 ZIP with clickTag, ZIP up to 600 KB |
| Google Ads · imagesSpecs checked | JPG or PNG, up to 150 KBAnimated GIF, up to 150 KB |
| Campaign Manager 360 · DV360Specs checked | JPG or PNG, up to 150 KBHTML5 ZIP with clickTag, ZIP up to 9,500 KB, backup image |
| AdformSpecs checked | JPG or PNG, up to 150 KBHTML5 ZIP with clickTag, up to 300 KB unpacked, backup image |
| XandrSpecs checked | JPG or PNG, up to 150 KBHTML5 ZIP with clickTag, backup image |
| IAB HTML5Specs checked | JPG or PNG, up to 250 KBHTML5 ZIP with clickTag, ZIP up to 250 KB, backup image |
File size
| Still image | Up to 150 KB |
|---|---|
| HTML5 package | 250 KB to 9,500 KB, depending on the package |
| Animated GIF | Up to 150 KB |
- Cut the number of images before their quality: one strong photo weighs less than three.
- Sizewright subsets the fonts to the letters a banner uses and steps image quality down until each package fits its limit.
- In animated GIFs Sizewright merges held frames and keeps the photo still when a limit needs it.
Design rules for 300 × 1050
What works
- Stack in a fixed order: logo, headline, image, button. The eye moves down once.
- Break the headline into short lines of one or two words; never shrink it to fit a single line.
- Put the button at the foot, as wide as the column allows, so it still reads as a button at 120 or 160 pixels.
- Choose an image that crops well into a narrow window: one object rather than a wide scene.
- Expect the banner beside the content the visitor came for: one message and a clear button, readable in a second.
Common mistakes
- Text turned on its side.
- A wide photo squeezed into a narrow column.
- Long words broken into fragments where shorter words would fit.
- Copy that only makes sense once the landing page is open.
Questions about the 300 × 1050
Where is the 300 × 1050 used?
A very tall format beside the content of desktop pages, close to the height of a full screen. It has room for a large image, a headline and supporting copy, and is sold as a premium placement.
What size is a Portrait banner?
A Portrait is 300 × 1050 pixels, an aspect ratio of 2:7. Sizewright composes it at exactly that size and also exports a version at twice the size for sharp screens on websites and in emails.
How large can a 300 × 1050 file be?
It depends on where it runs. Google Ads · HTML5 (JPG or PNG, up to 150 KB; HTML5 ZIP with clickTag, ZIP up to 600 KB), Google Ads · images (JPG or PNG, up to 150 KB; Animated GIF, up to 150 KB), Campaign Manager 360 · DV360 (JPG or PNG, up to 150 KB; HTML5 ZIP with clickTag, ZIP up to 9,500 KB, backup image), Adform (JPG or PNG, up to 150 KB; HTML5 ZIP with clickTag, up to 300 KB unpacked, backup image), Xandr (JPG or PNG, up to 150 KB; HTML5 ZIP with clickTag, backup image), IAB HTML5 (JPG or PNG, up to 250 KB; HTML5 ZIP with clickTag, ZIP up to 250 KB, backup image).
Can a 300 × 1050 banner be animated?
Yes. Sizewright animates it as HTML5 with a clickTag and as an animated GIF, kept to 15 seconds so it passes the stricter limits, and a still image always comes with it.
How do I design for the 300 × 1050?
Less than half as wide as it is tall. It stays in view beside the content while the visitor scrolls. Stack in a fixed order: logo, headline, image, button. The eye moves down once. Break the headline into short lines of one or two words; never shrink it to fit a single line. Put the button at the foot, as wide as the column allows, so it still reads as a button at 120 or 160 pixels. Choose an image that crops well into a narrow window: one object rather than a wide scene. Expect the banner beside the content the visitor came for: one message and a clear button, readable in a second.
Create a 300 × 1050 set from your brand
Paste your website address. Sizewright reads your brand and composes this size with every other format of the campaign.